epay's got a lovely 11/34(prob a or c) two rack system going for 880$ http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=1247&it

looks like tektronix test system - the cpu box looks fully loaded possibly with the fp11 and or 11/34c cache board, 2RLs and a DEC 9 track tape drive, controllers, semi ram., two short racks. you should be able to squeeze these into a single tall rack if you're careful. Should run Unix V7 quite nicely!